Nov 17, 51 Dear Josh : Thanks for the information via Roger. I put the dneid[?] particles (silica[?] gel) into broth - got foam[?] (gas) and after 24 hours no growth.) It looks like your yeast Ex mutant could be what we're looking for and thus some lafa[?] Could I bother you for slope of this for the Leauine[?] Sr mutant? Regards G.